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| Al-Reza,Sharif M.; Rokonuzzaman,M.; Afroz,Monira; Hussain,Md. Iqbal; Rashid,M. A.; Rahman,Atiqur. |
| ABSTRACT This study was designed to examine the chemical composition and in vitro antioxidant activity of the hydrodistillated essential oil and various extracts obtained from Premna integrifolia Linn. GC-MS analysis of the essential oil was resulted in determination 29 different compounds, representing 95.73% of total oil. Antioxidant activities of the essential oil and organic extracts of chloroform, ethyl acetate and methanol were determined by three different test systems namely DPPH (2,2-diphenyl-1-picrylhydrazyl), superoxide and nitric oxide radical scavenging assays. The essential oil and methanol extract showed potent antioxidant activity among all the tested samples. Furthermore, the amount of total phenolic compounds was determined and its... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Premna integrifolia Linn; Antioxidant activity; Essential oil; Total phenolics. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100203 |
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| Rahman,Atiqur; Siddiqui,Shah Alam; Oke-Altuntas,Feyza; OKAY,Sezer; GÜL,Fatih; Demirtas,Ibrahim. |
| Abstract Lasia spinosa (L.) Thwaites is a widely used ethnomedicinal plant in Bangladesh. In this study, we investigated phenolic contents, volatile compounds and fatty acids, and essential oil components of extracts prepared from aerial parts of the plant. The main volatile compounds were methyl ester of oleic acid, palmitic acid and stearic acid as determined by GC/MS. Phenolic contents of the extracts were determined qualitatively and quantitatively by HPLC/TOF-MS. Six phenolic compounds (syringic acid, morin, gentistic acid, 4-hydroxybenzoic acid, cinnamic acid, and apigenin) were found in the extracts. GC/MS analysis of steam distilled essential oil showed camphor, α-pinene and δ-3-carene as the main constituents. In DPPH radical scavenging assay, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: GC/MS; HPLC/TOF-MS; DPPH radical scavenging activity; Metal chelating; MIC. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100405 |
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